android 广播 实例

在Activity中，注册广播的一个Demo。

总共分3步

第一步：定义一个BroadcastReceiver广播接收类：

 private BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver(){
         @Override
         public void onReceive(Context context, Intent intent) {
             String action = intent.getAction();
             if(action.equals(ACTION_NAME)){
                 Toast.makeText(Test.this, "处理action名字相对应的广播", 200);
             }
         }

     };

 

第二步：注册该广播：

 public void registerBoradcastReceiver(){
         IntentFilter myIntentFilter = new IntentFilter();
         myIntentFilter.addAction(ACTION_NAME);
         //注册广播
         registerReceiver(mBroadcastReceiver, myIntentFilter);
     }

 

第三步：触发响应

 

 mBtnMsgEvent = new Button(this);
         mBtnMsgEvent.setText("发送广播");
         mBtnMsgEvent.setOnClickListener(new OnClickListener() {
             @Override
             public void onClick(View v) {
                 Intent mIntent = new Intent(ACTION_NAME);
                 mIntent.putExtra("yaner", "发送广播，相当于在这里传送数据");

                 //发送广播
                 sendBroadcast(mIntent);
             }
         });

 

 

-----最后附上完整代码：

 package my.yaner;

 import android.app.Activity;
 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
 import android.os.Bundle;
 import android.view.View;
 import android.view.View.OnClickListener;
 import android.widget.Button;
 import android.widget.LinearLayout;
 import android.widget.Toast;

 public class Test extends Activity{
     private final String ACTION_NAME = "发送广播";
     private Button mBtnMsgEvent = null;

     protected void onCreate(Bundle savedInstanceState){
         super.onCreate(savedInstanceState);

         //注册广播
         registerBoradcastReceiver();

         LinearLayout mLinearLayout = new LinearLayout(this);
         mBtnMsgEvent = new Button(this);
         mBtnMsgEvent.setText("发送广播");
         mLinearLayout.addView(mBtnMsgEvent);
         setContentView(mLinearLayout);

         mBtnMsgEvent.setOnClickListener(new OnClickListener() {
             @Override
             public void onClick(View v) {
                 Intent mIntent = new Intent(ACTION_NAME);
                 mIntent.putExtra("yaner", "发送广播，相当于在这里传送数据");

                 //发送广播
                 sendBroadcast(mIntent);
             }
         });
     }

     private BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver(){
         @Override
         public void onReceive(Context context, Intent intent) {
             String action = intent.getAction();
             if(action.equals(ACTION_NAME)){
                 Toast.makeText(Test.this, "处理action名字相对应的广播", 200);
             }
         }

     };

     public void registerBoradcastReceiver(){
         IntentFilter myIntentFilter = new IntentFilter();
         myIntentFilter.addAction(ACTION_NAME);
         //注册广播
         registerReceiver(mBroadcastReceiver, myIntentFilter);
     }
 }